:root {
  color-scheme: dark;
  --bg: #07111d;
  --panel: #101d2c;
  --panel-raised: #162638;
  --line: #294057;
  --text: #f3f7fb;
  --muted: #a9bacb;
  --accent: #35d0a0;
  --accent-dark: #0b7357;
  --yellow: #f5c453;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 85% -10%, #193b4d 0, transparent 36rem),
    var(--bg);
}

button,
input,
select {
  font: inherit;
}

.db-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 2.5rem 2rem 1.5rem;
}

.eyebrow,
.section-kicker {
  margin: 0 0 0.35rem;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0.45rem;
  font-size: clamp(2rem, 5vw, 3.6rem);
  letter-spacing: -0.045em;
}

.header-copy {
  max-width: 44rem;
  margin-bottom: 0;
  color: var(--muted);
}

.back-link {
  flex: 0 0 auto;
  padding: 0.75rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  color: var(--text);
  background: #101d2ccc;
  text-decoration: none;
}

.back-link:hover {
  border-color: var(--accent);
}

.db-shell {
  display: grid;
  gap: 1.25rem;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem 3rem;
}

.filter-card,
.results-card {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: #101d2cf2;
  box-shadow: 0 1rem 3rem #0004;
}

.section-heading,
.results-heading,
.route-card-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.section-heading h2,
.results-heading h2 {
  margin-bottom: 0;
}

.live-badge,
.count-badge,
.pattern-key {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  color: #07111d;
  background: var(--accent);
  font-size: 0.76rem;
  font-weight: 800;
  white-space: nowrap;
}

#route-search-form {
  display: grid;
  grid-template-columns: minmax(15rem, 0.8fr) minmax(19rem, 1.4fr) auto;
  align-items: end;
  gap: 1rem;
  margin-top: 1.35rem;
}

label {
  display: grid;
  gap: 0.45rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 2.8rem;
  border: 1px solid #3b536b;
  border-radius: 0.35rem;
  padding: 0.65rem 0.75rem;
  color: var(--text);
  background: #07111d;
}

input:focus,
select:focus,
button:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 3px solid #35d0a066;
  outline-offset: 2px;
}

.form-actions {
  display: flex;
  gap: 0.65rem;
}

button {
  min-height: 2.8rem;
  border-radius: 0.35rem;
  padding: 0.65rem 0.9rem;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

button:disabled {
  cursor: wait;
  opacity: 0.68;
}

.primary-button {
  color: #04110d;
  background: var(--accent);
  font-weight: 800;
}

.secondary-button {
  color: var(--text);
  border-color: var(--line);
  background: transparent;
}

.form-note {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.summary-grid article {
  padding: 1.15rem;
  border-left: 4px solid var(--accent);
  background: var(--panel);
}

.summary-grid span {
  font-size: 1.8rem;
  font-weight: 850;
}

.summary-grid p {
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.result-status {
  margin-top: 1.1rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--yellow);
  color: var(--muted);
  background: #0a1623;
}

.route-results {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.route-card {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: var(--panel-raised);
}

.operator-line {
  margin-bottom: 0.25rem;
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.operator-line span {
  margin-left: 0.4rem;
  color: var(--muted);
}

.route-card h3 {
  margin-bottom: 0;
  font-size: clamp(1.05rem, 2.2vw, 1.35rem);
}

.route-card h3 span {
  color: var(--yellow);
}

.pattern-key {
  color: var(--text);
  border: 1px solid #47637e;
  background: #0a1623;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.route-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.7rem;
  margin: 1rem 0;
}

.route-meta div {
  padding: 0.7rem;
  background: #0a1623;
}

.route-meta dt {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 750;
  text-transform: uppercase;
}

.route-meta dd {
  margin: 0.25rem 0 0;
  font-weight: 700;
}

details {
  border-top: 1px solid var(--line);
  padding-top: 0.85rem;
}

summary {
  color: var(--accent);
  font-weight: 800;
  cursor: pointer;
}

.calling-pattern {
  display: grid;
  gap: 0;
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.calling-pattern li {
  display: grid;
  grid-template-columns: 2rem 1fr auto;
  align-items: center;
  gap: 0.7rem;
  min-height: 2.5rem;
  border-bottom: 1px solid #29405788;
}

.calling-pattern li:last-child {
  border-bottom: 0;
}

.stop-index {
  display: grid;
  place-items: center;
  width: 1.65rem;
  height: 1.65rem;
  border: 1px solid #47637e;
  border-radius: 50%;
  color: var(--muted);
  font-size: 0.7rem;
}

.stop-name {
  font-weight: 680;
}

.stop-crs {
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.matched-stop {
  margin-inline: -0.55rem;
  padding-inline: 0.55rem;
  background: #35d0a01b;
}

.matched-stop .stop-index {
  color: #07111d;
  border-color: var(--accent);
  background: var(--accent);
}

@media (max-width: 900px) {
  #route-search-form {
    grid-template-columns: 1fr 1fr;
  }

  .form-actions {
    grid-column: 1 / -1;
  }

  .route-meta {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 620px) {
  .db-header {
    display: grid;
    padding: 1.5rem 1rem 1rem;
  }

  .back-link {
    grid-row: 1;
    width: max-content;
  }

  .db-shell {
    padding: 0 1rem 2rem;
  }

  .filter-card,
  .results-card {
    padding: 1rem;
  }

  #route-search-form,
  .summary-grid {
    grid-template-columns: 1fr;
  }

  .form-actions {
    display: grid;
    grid-column: auto;
  }

  .summary-grid {
    grid-template-columns: 1fr 1fr;
  }

  .route-card-heading {
    display: grid;
  }

  .pattern-key {
    width: max-content;
  }

  .route-meta {
    grid-template-columns: 1fr;
  }
}